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Column subtraction
Finding the difference by counting on
This video shows you how to find the difference between two numbers by counting up in manageable steps. This is a very useful method which supports mental calculation, and particularly for working out change, and finding the difference between two times.
Dividing by grouping on a number line
This video will show you a method to help you divide larger numbers by finding easy groups that fit into it. It helps with understanding how to divide in your head and with more formal methods you will learn later on.
Short Division
Watch this video to learn how to divide a large number by a single digit number.
Division by Chunking
Learn how to divide larger numbers using a method of long division called 'chunking'. This method is great because it lets you divide a number using multiplication facts that you know well.
Division by chunking 2
Learn how to use the long division method called chunking to divide numbers by subtracting 'chunks' at a time.